KR101737193B1 - Vertical tunnel construction and constructing method for the same - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical tunnel structure constructed in a basement and a construction method thereof, and more particularly, to a vertical tunnel structure including an air passage and an escape route, and a construction method thereof.
The vertical tunnel structure of the present invention comprises a circular wall 10 constituting an inner wall surface of a straight hole 1 excavated so as to be connected to a connection tunnel 4 of an underground facility, A vertical passage 30 formed in the inside of the evacuation passage to the ground from the bottom of the vertical hole by using the vertical wall body 20; A vertical passage entrance 50 formed at the lower end of the vertical wall, and a space formed between the bottom of the horizontal hole and the precast slab in the lowermost layer so as to store groundwater generated in the vertical hole, And a water collecting tank (90).

Description

TECHNICAL FIELD [0001] The present invention relates to a vertical tunnel structure and a construction method thereof,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical tunnel structure constructed in a basement and a construction method thereof, and more particularly, to a vertical tunnel structure including an air passage and an escape route, and a construction method thereof.

Generally, in order to prevent pollution of air in underground tunnels and platforms due to various harmful gases and fine dust contained in wind generated when a train is operated on subway lines, underground tunnels And a vertical tunnel structure serving as a passage for discharging the air in the platform to the ground or supplying the ground air into the underground tunnel and the platform.

The construction of such a vertical tunnel structure is carried out by excavating a horizontal tunnel from the ground to the ground, installing a steel structure on the inner surface of the tunnel, or preventing the vertical tunnel structure from collapsing by placing a concrete mortar, After the mold is laid and the foundation concrete is cured, once the curing of the foundation concrete is completed, the mold is dismantled and the waste material is collected from the ground and the construction is completed.

However, since the conventional concrete tunnel construction method has a limitation on the weight of the foundation concrete that can be supported by the form, the height at which the concrete can be constructed once is limited to a certain height (about 4m to 5m).

Therefore, it is necessary to repeat the installation of the formwork from the bottom to the exit of the vertical tunnel structure, the installation / curing of the foundation concrete, and the dismantling of the formwork, so that the construction period and cost are excessively required, There is a problem that it exists.

In recent years, in order to quickly evacuate a vertical tunnel structure of a user in the event of a disaster such as a fire in the above-mentioned vertical tunnel structure, a step for evacuation has been installed inside the vertical tunnel structure to impart functionality to the tunnel structure , Because the stairway for evacuation is open, it is exposed to the smoke and toxic gases discharged to the outside through the vertical tunnel structure for a long time when the evacuees reach the ground when evacuating the fire, so that they can not function as a practical evacuation route. to be.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vertical tunnel structure and a method of constructing the same that can perform a function as a safe evacuation route for passengers in the event of a disaster, .

In order to achieve the above object, the vertical tunnel structure of the present invention comprises a circular wall constituting an inner wall surface of a through hole excavated to be connected to a connection tunnel of an underground facility, and a vertical wall separating the circular wall into a vertical evacuation path and a vent path A vertical passage formed from the floor to the ground using a vertical wall inside the evacuation passage; a step for evacuation provided inside the vertical passage; a vertical passage entrance formed at the lower end of the vertical wall; And a space formed between the floor of the watercraft and the lowest precast slab so as to store groundwater generated in the watercourse.

In addition, the pre-cast slabs through which the vertical passages penetrate to form the respective layers may be installed at predetermined intervals.

In this case, an elevator installation passage is formed on the outer side of the vertical passage for connecting the pre-cast slabs sequentially from the floor to the ground of the evacuation route, and the vertical passage and the elevator installation passage are provided with an entrance Is formed.

Further, auxiliary slabs may be further provided between the water collecting tank and the lowermost slab to form a space that can be used as a machine room.

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It is also possible to further include a connection wall connecting the vertical wall and the horizontal wall separating the connection tunnel of the underground facility.

The method for constructing the vertical tunnel structure according to the present invention includes a step of drilling a vertical hole, a step of placing a foundation concrete on the floor of the horizontal hole, a step of installing a slip foam workbench in the interior of the horizontal hole, A reinforced concrete structure constituting a sidewall of a circular wall constituting an inner wall of the vertical wall, a vertical wall partitioning the vertical wall into a vertical escape route and a ventilation passage, and a vertical passage extending from the vertical wall at a predetermined interval toward the escape route are installed A step of continuously inserting the sidewalls of the vertical walls and the vertical passages into the reinforced concrete structures while the slipform workbench is elevated; A step of completing the vertical passage while being assembled to the side wall, and a step of assembling the step for escape inside the completed vertical passage, The features.

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The method for constructing the vertical tunnel structure according to the present invention comprises the steps of drilling a vertical hole, placing the base concrete on the floor of the horizontal hole, installing a slip foam workbench in the interior of the horizontal hole, A step of installing reinforced concrete structures constituting a vertical wall constituting a vertical wall and a circular wall wall constituting the wall and a vertical escape route and a ventilating passage of the horizontal wall; A step in which the wall is continuously inserted; a step of assembling the pre-cast vertical passageway into the completed vertical wall; and a step of assembling a step for evacuation in the completed vertical passageway.

In this case, the step of installing the slip-foam workbench in the inside of the through hole may further include a step of installing a water collecting tank on the bottom of the water hole, wherein the step of installing the water collecting tank includes: Wherein the reinforcing concrete structures are continuously installed while the slip foam workbench is elevated and the reinforcing concrete structures are continuously installed in the reinforcing concrete structures, and a step in which the pre-cast slab supporting brackets And a step in which the precast slab is assembled through the precast slab supporting brackets.

In addition, the pre-cast slab supporting brackets are installed at a predetermined height interval in the circular wall, the vertical wall, and the vertical passage, and the pre-cast slab is installed in the pre- And may be assembled through the brackets.

In addition, the step for supporting the step for supporting the escape is provided on the inner side of the vertical passage, and the step for escape is installed in the completed vertical passage, It may be a slab-type prefabricated staircase manufactured.

In addition, in the step of installing the step for escape inside the completed vertical passage, the step for escape is provided on the inner side of the vertical passage, the step for supporting the step for supporting the escape is provided, Lt; / RTI >

Meanwhile, the pre-cast elevator installation passageway may be assembled at a predetermined height unit outside the vertical passageway before the step of assembling the escape step inside the completed vertical passageway.

In addition, when the reinforced concrete structures are installed, a reinforced concrete structure constituting an elevator installation passage is installed together, and the elevator installation passage may be installed together with the slip foam work platform.

Meanwhile, at the stage where the reinforced concrete structures constituting the circular wall are installed, jack rods for lifting and lowering the slip foam workbench are installed at the bottom of the through holes at regular intervals along the inner wall surface, It is preferable that the vertical strength reinforcing supporting pipe is coupled to the outer side of the jack rods.

Further, in the step of installing the slip foam workbench in the inside of the weir, the disassembly operation of the steel structure and the work of attaching the waterproof foam can be performed through the auxiliary workbench provided at the upper end of the slip foam workbench.

According to the present invention configured as described above, the underground facility is ventilated through a ventilation path at a normal time, and when an emergency evacuation situation occurs such as a fire in an underground facility, a large number of underground facility users move to the escape route through a connection tunnel It is possible to quickly and safely evacuate to the ground on the slab step provided in the vertical passage. Most of the smoke and toxic gases generated by the fire are collected at the top of the connecting tunnel and discharged to the ground through the ventilation duct. Since the slab staircase is installed inside the vertical passage and isolated from the outside, It is possible to quickly and safely evacuate to the ground without being exposed to smoke and toxic gas.

In addition, since the construction of the vertical tunnel structure is continuously performed through the slipform workbench, and the structures such as the front wall, the slab, and the escape staircase of the vertical passage are installed by the precast assembly method, There is an effect that can be saved.

1 is a plan view of a vertical tunnel structure according to the present invention;
2 is a front cross-sectional view of a vertical tunnel structure taken along the line II-II in FIG.
3 is a side cross-sectional view of a vertical tunnel structure taken along the line III-III in FIG.
Fig. 4 is a sectional view taken along the line III-III in Fig. 1, showing a state in which a water collecting tank is installed. Fig.
FIGS. 5 to 7 are views sequentially illustrating a method of constructing a vertical tunnel structure according to the present invention. FIG.
8 is a view showing a state in which a vertical strength reinforcing supporting pipe is coupled to an outer side only of jack rods installed on the entire connection tunnel of an underground facility of the present invention.
9 is a plan view showing a state in which the precast vertical passage front wall of the present invention is assembled to a side wall of a vertical passage;
10 is a cross-sectional view taken along the line X-X in Fig.
11 is a plan view showing a state in which an elevator installation passage is installed outside the vertical passage front wall of the present invention.
12 is a sectional view taken along the line XII-XII in Fig.

The features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It must be interpreted in terms of meaning and concept.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. The same reference numerals are used for the same components, and only the different portions are described for the sake of clarity.

1 to 3, the vertical tunnel structure according to the present invention includes a circular wall 10 constituting an inner wall surface of a straight hole 1 excavated to be connected to a connection tunnel 4 of an underground facility, A vertical wall body 20 for partitioning the wall 10 into a vertical escape path 3 and a ventilation path 2 and a vertical wall body 20 in which the vertical wall 20 is used inside the escape path 3, A vertical passage 30 formed from the floor to the ground, a step 40 for escape provided inside the vertical passage 30 and a vertical passage entrance 50 formed at the lower end of the vertical wall 20.

A horizontal wall 4a for vertically dividing the connection tunnel 4 of the underground facility and a connection wall 60 for connecting the vertical wall 20 are provided so that the escape route 3 and the ventilation route 2 are connected to each other by a connection tunnel It is preferable to form the flow paths separately from the flow paths 4.

The slabs 70, through which the vertical passages 30 pass, may be installed at the predetermined intervals in the evacuation route 3.

11 and 12, an elevator installation passage 80 is formed on the outer side of the vertical passage 30 to sequentially connect the slabs 70 and connect the floor of the escape route 3 to the ground, May be installed. The elevator installed in the elevator installation passage 80 is normally used as a moving means of an administrator. When an emergency evacuation situation such as a fire occurs in an underground facility, a plurality of users of the underground facility can utilize it as a means of escaping to the ground. In this case, it is needless to say that the vertical passage 30 and the elevator installation passage 80 are provided with entrances through the escape route 3 for each floor.

Meanwhile, as shown in FIG. 4, a water collecting tank 90, which can store groundwater generated from the water hole 1, may be installed on the bottom of the water hole 1. In this case, the water collecting tank (90) is a space formed between the bottom of the water hole (1) and the slab (71) of the lowest layer.

The auxiliary slab 72 may be further provided between the water collecting tank 90 and the lowermost slab 71 to utilize the space between the auxiliary slab 72 and the water collecting tank 90 as the machine room 91.

As such, the vertical tunnel structure is normally ventilated to the underground facility through the ventilation path 2. When an emergency evacuation situation occurs such as a fire in the underground facility, a large number of users of the underground facility pass through the connection tunnel 4 It is possible to quickly and safely evacuate to the ground on the escape stairway 40 provided in the vertical passage 30 after moving to the escape route 3. At this time, most of the smoke and noxious gas generated in the fire are collected on the upper part of the connection tunnel 4 and discharged to the ground through the ventilation path 2. The escape step 40 is installed inside the vertical passage 30 The user is able to evacuate to the ground quickly and safely without being exposed to smoke and toxic gases.

Hereinafter, a method of constructing a vertical tunnel structure according to the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.

As shown in FIG. 5, first, the digger 1 is excavated from the ground so as to be connected to the connection tunnel 4 of an underground facility.

Although not shown, a concrete mortar is placed on the inner circumferential surface of the excavated swivel (1) so that the swivel (1) is not collapsed, and then a deflector is attached. If there is a weak portion in the excavation process of the swivel (1), reinforcement work for installing the steel structure (1a) in the swivel (1) may be added.

After completion of excavation of the weir 1, the foundation concrete is laid on the bottom of the excavated weir 1, the reinforcing bars are laid on the foundation concrete, and then the main body concrete is laid on the bottom of the weir 1 to securely construct the bottom.

6 and 7, when the floor construction of the straight hole 1 is completed, the slip-form workbench 100 is installed, and then the slab- And reinforced concrete structures 200 made of horizontal reinforcing bars are installed.

The reinforced concrete structures 200 are divided into a circular wall 10 constituting the inner wall surface of the diggered through hole 1 and a vertical wall 3 partitioned by the vertical wall 3 and the ventilation passage 2 The vertical wall 20 and the vertical wall 30 extending from the vertical wall 20 to the escape route 3 at regular intervals.

Then, the slipform workbench 100 is elevated to continuously carry out the placement of the circular wall 10, the vertical wall 20, and the side walls 31 of the vertical passage 30.

Although not shown, a steel frame and a formwork for installing a doorway are provided for connecting the vertical wall 20 and the escape route 3 when the reinforced concrete structure 200 constituting the vertical wall 20 is installed, and the doorway installation formwork is installed Thereafter, a mold for installing a connection wall body 60, which is connected to the entrance, is installed, while vertically dividing the connection tunnel 4 of the underground facility.

The slipform workbench 100 includes a plurality of foam frames 110 vertically installed at a predetermined distance from the reinforcing concrete structures 200 on the inner circumferential surface of the excavated through hole 1, A hydraulic jack 130 coupled to the outside of the foam frame 110; a jack rod 140 coupled to the hydraulic jack 130; An upper deck 150 coupled to an inside of an upper end of the ceiling 110 and an intermediate deck 160 coupled to an inner side of the break of the foam frame 110, And a lower expression deck 170.

The upper deck 150 is provided with a concrete hopper 180 for injecting unhardened concrete. The concrete hopper 180 may be provided in plurality in consideration of the injection position so as to inject the uncured concrete most efficiently. Also, the concrete hopper 180 may not be installed in a manner directly fixed to the upper deck 150, but may be installed at a distance from the upper end of the upper deck 150 by hanging from the ground with a crane. In this case, it is very easy to supply the uncured concrete from the ground to the concrete hopper 180, and the position of the concrete hopper 180 can be freely changed according to the operation conditions.

At the lower end of the concrete hopper 180, the upper concrete injection pipe 190 extends downwardly. The deck panel of the upper deck 150 is connected to the lower end of the upper concrete injection pipe 190 and is connected to the upper concrete injection hole 151 for passing the concrete supplied from the upper concrete injection pipe 190 to the stop deck 160 The suspended concrete injection pipe 190 connected to the upper concrete injection hole 151 is installed in the suspended deck 160. It is preferable that the suspended concrete injection pipe 190 is rotatably installed 360 ° horizontally.

The deck panel of the suspended deck 160 is connected to the lower end of the suspended concrete injection pipe 190 and connected to the suspended concrete injection hole 190 for passing the concrete supplied from the suspended concrete injection pipe 190 to the lower deck 170 161 may be formed. In this case, the lower deck 170 is provided with a concrete injection hose 192 connected to the interrupted concrete injection hole 161. The concrete injection hose 192 has a circular wall 10, a vertical wall 20 and a precast slab supporting bracket 210 installed in the vertical passage 30 for installing a precast slab 70 to be described later Concrete is injected.

Also, a concrete injection hose 192 may be connected to the lower end of the concrete hopper 180. In this case, the concrete injection hose 192 is connected to the upper concrete injection pipe 190 and injects concrete into the vertical wall 20 and the vertical passage 30 which are difficult to receive concrete from the upper concrete injection pipe 190 do.

On the other hand, it is preferable that a winch 171 for raising and lowering the elevating lower deck 170 is installed below the suspended deck 160.

At the upper edge of the upper deck 150 of the slipform workbench 100, a work for dismantling the steel structures 1a installed at the time of installing the slip foam and attaching the tarpaulins to the disassembled steel structure 1a It is possible to further include the auxiliary workbench 155 that can be performed.

The slipform workbench 100 configured as described above is constructed such that horizontal and vertical rebar assemblies and materials are stacked in the upper deck 150 and the jack rod 140 is extended and assembled, Horizontal and vertical rebar assemblies and pouring of concrete are performed, and the precast slab supporting bracket 210 is installed in the elevating lower deck 170.

In addition, the upper deck 150 is provided with a vertical reinforcing bar, a horizontal reinforcing bar, and a handy material for assembling the reinforcing bar, the reinforcing bar, the embedding box and the mold for installing the precast slab supporting bracket, The necessary job items are loaded.

Various materials for installing the vertical reinforcing bars, the horizontal reinforcing bars, and the precast slab supporting brackets 210 are supplied to the required positions through the through holes formed in the upper, middle, and lower decks 170.

When the installation of the slip-form workbench 100 is completed, the operator installs the foam panel 120 along the reinforcing concrete structures 200 using the jack rod 140 installed in advance, Concrete is injected between the outer circumferential surface of the foam panel 120 and the inner circumferential surface of the through hole 1 by using the concrete injection pipe 190 and the concrete injection hose 192 to pour the concrete at a predetermined height.

When the slip foam workbench 100 is raised to continuously carry out the insertion of the circular wall 10, the vertical wall 20 and the side walls 31 of the vertical passage 30, the circular wall 10 and the vertical wall 30, The precast slab supporting bracket 210 is also installed outside the side walls of the vertical passage 30 and the vertical passage 30 at predetermined intervals. That is, a bracket reinforcing bar is connected to the vertical reinforcing bar and the horizontal reinforcing bar at a position where the precast slab 70 is to be installed in the halt deck 160, and then the reinforcing bar for bracket is bent, The concrete is injected into the concrete pouring hole 161 through the concrete pouring hose 192 and then the concrete is injected through the concrete pouring hose 192 into the pouring hole of the bracket, When the concrete is laid on the formwork, the installation of the precast slab supporting bracket 210 is completed.

When the precast slab supporting bracket 210 is installed, stair support brackets 41 for escape are also installed inside the side walls of the vertical passage 30. [ Since the method of installing the step brackets for escape 41 is similar to that of the precast slab supporting bracket 210, detailed description thereof will be omitted.

As shown in FIG. 8, since it is not necessary to form a circular wall on the front surface of the connection tunnel 4 of the underground facility, only the jack rod 140 is installed therein without installing a reinforced concrete structure. Since the jack rods 140 are subjected to a large vertical load from the top in comparison with the jack rods 140 installed at other places, the vertical strength reinforcing supporting tube 141 is provided only on the outer side of the jack rod 140 installed there .

The vertical strength reinforcing supporting pipe 141 is composed of a pair of right and left pairs of steel structures 141a and 141b and is made up of a plurality of steel structures having a predetermined height from the bottom of the through hole 1 along the jack rod 140 To the upper part of the connection tunnel 4, and is used.

After completion of the construction of the circular wall 10, the vertical wall 20 and the side wall 31 of the vertical passage 30 to the ground through the above process, the slipform workbench 100 is completely raised and then disassembled.

9 and 10, the front wall 32 of the precast vertical passage 30 is assembled to the side wall body 31 of the vertical passage 30 to complete the vertical passage 30. As shown in Fig. At this time, the front wall 32 of the precast vertical passage 30 is hung from a crane installed on the ground and supplied to a necessary position.

The precast slab 70 is preferably installed to be supported on the precast slab supporting bracket 210. The precast slab 70 is suspended from a crane installed on the ground and supplied to a required position. Since the precast slab 70 is manufactured in the form of a segment, it is easy to transport and transport, and a crane with a small output can be used, which is very advantageous in terms of work air and cost. In this case, the vertical passage 30 is partitioned into the respective layers through the precast slabs 70, and the front wall 32 of the precast vertical passage 30 is provided with an entrance for passing through the escape route 3 for each layer do.

When the vertical passages 30 and the slabs 70 are completed as described above, a step 40 for escape is provided in the completed vertical passage 30 as shown in FIGS. The shelf step 40 may be a slab-type prefabricated staircase that is assembled to the shelf-supporting bracket 41 as shown in the figure. Although not shown, the shelf- 41). ≪ / RTI > At this time, the slab-type assembled staircase or the prefabricated steel staircase is hung from a ground-mounted crane and supplied to a necessary position. Since the slab-type prefabricated staircase or the prefabricated steel staircase is sliced and assembled in a segment form, it is easy to transport and transport, and a crane with a small output can be used, which is very advantageous in terms of working air and cost.

The slab-type assembly step and the prefabricated steel staircase supplied to the inside of the vertical passage 30 are assembled firmly by using bolts in a state in which the ends are supported by the step-supporting bracket 41 for escape.

When the reinforced concrete structure 200 is installed after the slip form workbench 100 is installed in the inside of the through hole 1, the reinforcing concrete structure constituting the entirety of the vertical path 30 It can also be installed.

In this case, unlike the case where only the reinforced concrete structures constituting the sidewall 31 of the vertical passage 30 are provided, the front wall 32 of the vertical passage 30 made of precast is connected to the side of the vertical passage 30 There is no need to pass the step of assembling to the wall 31, which is advantageous in that the operation speed is increased.

As another embodiment of the present invention, an elevator installation passage 80 may be provided outside the front wall 32 of the vertical passage 30, as shown in FIGS.

In this case, the elevator installation passage 80 is precast in units of a predetermined height, and is assembled to the outside of the front wall 32 of the vertical passage 30 after the installation of the vertical passage 30 is completed. Needless to say, an elevator installation passage bracket (not shown) must be installed outside the front wall 32 of the vertical passage 30.

In the elevator installation passage 80 of the present invention, when a reinforced concrete structure constituting the entire vertical passage 30 is installed as in the other embodiments of the present invention, a reinforced concrete structure constituting the elevator installation passage 80 is also installed So that it can be assembled together with the vertical passage 30 by using the slip foam workbench 100.

The elevator installation passage 80 is installed from the bottom of the straight hole 1 to the ground while sequentially passing through the precast slabs 70. In this case, it is needless to say that an elevator installation hole must be formed in the precast slab 70 in advance. And the installation of the elevator equipment is done together when the escape stairs 40 are installed.

4, the step of installing the slip foam workbench 100 in the interior of the weir hole 1 and then installing the water collecting vessel 90 on the bottom of the flocculent pouring floor (step < RTI ID = 0.0 > May be added.

In this case, in the step of installing the water collecting tank 90, the reinforcing concrete structures 200 constituting the circular wall 10 constituting the inner wall surface of the through hole 1 excavated on the bottom of the through hole 1 are installed (10) is continuously inserted into the reinforced concrete structures (200) while the slip foam workbench (100) is elevated, and a step of placing the circular wall (10) The pre-cast slab supporting brackets 210 are installed on the pre-cast slab supporting brackets 210, and the pre-cast slabs 70 are assembled through the pre-cast slab supporting brackets 210.

The precast slab 70 becomes the lowest precast slab 71 when viewed from the whole of the through hole 1 and the collecting vessel 90 is connected to the bottom of the through hole 1 and the lowest precast slab 70). In this case, the vertical wall 20 and the vertical passage 30 are formed on the upper surface of the lowest precast slab 70.

Further, a precast slab 70 may be formed and then a precast auxiliary slab 72 may be further provided on the top of the lowest precast slab 70. In this case, a space formed between the auxiliary slab 72 and the lowermost slab 71 may be utilized as the machine room 91. [

Since the lowermost precast slab 70 and the auxiliary slab 72 are manufactured in the form of a segment, they can be easily transported and transported, and a crane with a small output can be used, which is very advantageous in terms of working air and cost.

When the installation of the water collecting tank 90 and the machine room 91 is completed, the circular wall body 10 constituting the inner wall surface of the straight hole 1, which is excavated on the top surface of the lowest precast slab 71 or the auxiliary slab 72, And a vertical wall 20 partitioning the vertical wall 1 into a vertical escape path 3 and a ventilation path 2 and a vertical wall 20 extending from the vertical wall 20 toward the escape path 3 at regular intervals The reinforced concrete structures 200 constituting the passages 30 are installed and the subsequent construction steps are the same as described above.

Since the water collecting tank 90 and the machine room 91 are installed simultaneously with the construction of the circular wall 10 and the lowermost precast slab 71 and the auxiliary slab 72 are cut out in the form of segments, And the cost can be greatly reduced.

In another embodiment of the present invention, only the circular wall 10 and the vertical wall 20 are installed using the slipform workbench 100, and the rest including the vertical passage 30 is used for the escape step 40 and the elevator installation And the passages 80 may be all assembled in a precast manner. In this case, since the structures to be assembled by precast are the largest in comparison with the other embodiments, the construction period and cost can be saved most greatly.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be takeners of ordinary skill in the art, And such variations are within the scope of the present invention.

1 ... handicraft 2 ... ventilation furnace
3 ... evacuation route 4 ... connection tunnel
4a ... horizontal wall 10 ... circular wall
20 ... vertical wall 30 ... vertical passage
31 ... side wall 32 ... front wall
40 ... escape stairs 41 ... escape stair support brackets
50 ... doorway 60 ... connection wall
70 ... Precast slab 71 ... Lowermost slab
72 ... auxiliary slab 80 ... elevator installation passage
90 ... Sewer tank 91 ... Machine room
100 ... Slipform workbench 141 ... Support pipe for vertical strength reinforcement
155 ... Secondary workbench 200 ... Reinforced concrete structure
210 ... Precast slab support bracket

Claims (17)

A circular wall constituting an inner wall surface of a through hole excavated to be connected to a connection tunnel of an underground facility;
A vertical wall for partitioning the circular wall into a vertical escape path and a ventilation path;
A vertical passage formed from the bottom of the weir to the ground using a vertical wall inside the evacuation passage;
A step for escaping provided inside the vertical passage;
A vertical passage entrance formed at the lower end of the vertical wall; And
And a water collecting tank having a space formed between the bottom of the water hole and the lowest precast slab so as to store groundwater generated in the water hole. The method according to claim 1,
Wherein the pre-cast slabs through which the vertical passages pass to form the respective layers are installed at predetermined intervals. 3. The method of claim 2,
An elevator installation passage for connecting the pre-cast slabs from the bottom to the ground is provided at the outside of the vertical passage,
Wherein the vertical passage and the elevator installation passage are provided with an entrance through which the escape route passes for each layer. delete The method according to claim 1,
Further comprising a secondary slab formed between the water collecting tank and the lowermost slab to form a space that can be utilized as a machine room. The method according to claim 1,
Further comprising a connection wall connecting the vertical wall and the horizontal wall separating the connection tunnel of the underground facility. delete A hydraulic drilling step;
Placing a base concrete on the bottom of the weir;
A slip foam workbench is installed in the interior of the weir;
A vertical wall constituting the inner wall surface of the excavated swivel and a vertical wall separating the horizontal wall into a vertical escape route and a ventilating route and a reinforcing wall constituting a side wall of a vertical passage extending from the vertical wall at regular intervals toward the escape route Installing concrete structures;
The sidewall bodies of the vertical wall and vertical wall are continuously inserted into the reinforced concrete structures while the slip foam workbench is raised;
A step of completing the vertical passage while the front wall of the pre-cast vertical passage is assembled to the side wall of the completed vertical passage; And
And assembling a step for evacuation into the completed vertical passage. ≪ RTI ID = 0.0 > 18. < / RTI > A hydraulic drilling step;
Placing a base concrete on the bottom of the weir;
A slip foam workbench is installed in the interior of the weir;
Installing a reinforced concrete structure constituting a circular wall constituting an inner wall surface of the excavated swivel and a vertical wall partitioning the swivel passage into a vertical evacuation route and a ventilating route;
The slab-form workbench rises and the circular wall and the vertical wall are continuously inserted into the reinforced concrete structures;
Assembling a pre-cast vertical passage into a finished vertical wall; And
And assembling a step for evacuation into the completed vertical passage. ≪ RTI ID = 0.0 > 18. < / RTI > 10. The method according to claim 8 or 9,
Further comprising the step of installing a water collecting tank on the bottom of the water hole after the slip foam workbench is installed in the water hole,
The step of installing the water collecting tank includes the steps of installing reinforced concrete structures constituting a circular wall constituting the inner wall surface of the water hole on the bottom of the excavated water hole and forming a circular wall on the reinforced concrete structures, Wherein the precast slab supporting brackets are installed at a predetermined height on the circular wall, and the precast slab supporting brackets are assembled through the precast slab supporting brackets. Construction method of structure. 10. The method according to claim 8 or 9,
The pre-cast slab supporting brackets are installed at the predetermined height intervals in the circular wall, the vertical wall, and the vertical passage,
Wherein the precast slabs are assembled through the precast slab support brackets prior to the step of installing the escape stairs inside the completed vertical passageways. 10. The method according to claim 8 or 9,
Stairs supporting brackets for escape are provided inside the vertical passage,
Wherein the step of installing the vertical tunnel is a prefabricated slab-type assembly step that is assembled to the step-support bracket for evacuation in the step of installing the step for evacuation inside the completed vertical pathway. Way. 10. The method according to claim 8 or 9,
Stairs supporting brackets for escape are provided inside the vertical passage,
Wherein the step for evacuation is a prefabricated steel step to be assembled to the bracket for supporting the step for evacuation in the step of installing the step for evacuation inside the completed vertical passage. 10. The method according to claim 8 or 9,
Wherein a pre-cast elevator installation passage is assembled on the outside of the vertical passage in a unit of a predetermined height before the step of assembling the escape step inside the completed vertical passage. 10. The method according to claim 8 or 9,
A reinforcing concrete structure constituting an elevator installation passage is installed together with the reinforcing concrete structures,
And the elevator installation passage is also installed while the slip-form worktable is elevated. 10. The method according to claim 8 or 9,
In the step of installing the reinforced concrete structures constituting the circular wall,
Jack rods for raising and lowering the slip foam workbench are installed at the bottom of the weir holes at regular intervals along the inner wall surface,
Wherein a vertical strength reinforcing support pipe is coupled to the outer side of the jack rods provided on the front surface of the connection tunnel of the underground facility. 10. The method according to claim 8 or 9,
At the stage where the slipform workbench is installed in the inside of the weir
Wherein the disassembly operation of the steel structures and the work of attaching the tarpaulins are performed through the auxiliary workbench provided at the upper end of the slip foam workbench.

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